4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9

Analysis

max time kernel
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/10/2026, 06:27

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General

Target
jaffacakes118_4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9.exe
Size 48KB
Sample261002-g72jcssdnc
SHA256 4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9
MD5 1971464993a09034ae562c75cfd39629
SHA1 5d26d78bc30fab629da5a87de5a83a6a3b182bae
SHA512 f777ad75121c7d418a9107143e1efd109674d01696d144075724dddccba250af0e657577925202670a7c2d731867b77a9c4f52647459fb7129377b09b3d85604
SSDEEP 768:OK2FNgoy7OIudIQOMGKCYNQat5JxLBHTK:OK2/Zy79uDXFCYfnVh2
TLSH
T1FA234D82B7508CF3C39A05B4346FBB394BA76C3413769893EBF33A9658211A7593491F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

discovery execution persistence privilege_escalation

Malware Config

Signatures

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

Executes dropped EXE 1 IoCs

pid	Process
5636	lenowosk.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\lenowosk.exe	jaffacakes118_4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9.exe
File created	C:\Windows\SysWOW64\lenowos.dll	jaffacakes118_4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9.exe

Event Triggered Execution: Accessibility Features 1 TTPs
Windows contains accessibility features that may be used by adversaries to establish persistence and/or elevate privileges.
persistence privilege_escalation

Accessibility Features
T1546.008

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1564	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jaffacakes118_4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lenowosk.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 5636	2400	jaffacakes118_4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9.exe	88
PID 2400 wrote to memory of 1564	2400	jaffacakes118_4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9.exe	89

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Windows\SysWOW64\lenowosk.exe
  C:\Windows\system32\lenowosk.exe ˜‰
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:5636
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\jaffacakes118_4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9.exe.bat
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:1564

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Event Triggered Execution

T1546

Accessibility Features

T1546.008

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

Accessibility Features

T1546.008

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

jaffacakes118_4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9.exe.bat

Path C:\Users\Admin\AppData\Local\Temp\jaffacakes118_4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9.exe.bat
Size 274B
SHA256 2c96b7315157ed0bfbeeb9d845145fb55c41f6aa9f0c0b48f3bc8b9256235c95
MD5 c810682f6442fe56d7eeff57558a971c
SHA1 7c2f57e3bdb587b7238e2a55bbbb5e74c1f0ae0d
SHA512 c6ecc3259d6975394174f548540838d8faa62b44db95118f7bb8005267b27abf9af3d9d55c0afe2cd4214240987dd6bcba59772c6f4452d1a8dd0d6e80eea4c8
TLSH
T11AD0C20873B79DDF0540CA2F1A3803BBC4A14D902A8C2B0A0722428860A172CA292B40
MD5 SHA1 SHA512 TLSH

Submit Download

lenowosk.exe

Path C:\Windows\SysWOW64\lenowosk.exe
Size 48KB
SHA256 4f3d8869db7129a084a9085a9fb1a8a31021a23ea3b1eb0e1eb6b05590c493b9
MD5 1971464993a09034ae562c75cfd39629
SHA1 5d26d78bc30fab629da5a87de5a83a6a3b182bae
SHA512 f777ad75121c7d418a9107143e1efd109674d01696d144075724dddccba250af0e657577925202670a7c2d731867b77a9c4f52647459fb7129377b09b3d85604
SSDEEP 768:OK2FNgoy7OIudIQOMGKCYNQat5JxLBHTK:OK2/Zy79uDXFCYfnVh2
TLSH
T1FA234D82B7508CF3C39A05B4346FBB394BA76C3413769893EBF33A9658211A7593491F
MD5 SHA1 SHA512 SSDEEP TLSH